Shell drill



J. CHESNEY SHELL DRILL March 2 192s.

Patented Mar. 2, 19,26.

UNITED STATES PATENT ePrice.

JOHN` CHESNEY, OF 'PAULSBOROQNEW JERSEY, ASSIGNOR TO E. I. DU' PONI` IDEI NEMOURS AND COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

SHELL ADRILL.

. .Application lcd June 12, 1916. Serial No. 103,134.

To all whom .it may.60710011214 Be it known that I, Jol-IN CHEsNnv, a citizen ot the UnitedStates, lof Paulsboro, in the county of Gloucester and in the State of New Jersey, have invented a certain new and useful Improvement in Shell Drills, and do hereby declarethat the following is a` full, clear, and exact description thereof.

My inventionfrelates particularly to an apparatus designed for vdrilling holes in charges for shells. such as explosive charges in thesame. A 1

rlhe object of my inventiontis to provide auapparatus o this character by means of which shell charges may be drilled and in such. amanner that danger of explosion due to friction from accumulated borings is avoided, and in such a manner that the drillingis carried out expeditiously and with a minimum amount of labor'.

IVhilemy inventiony is capable of embodiment in many ditleient forms, for the purpose of illustration I shall show only one form thereof in the accompanying drawings, in which, f I

Figure 1 is a vertical section of an apparatus made in accordance with my invention and,

F ig. 2 is aV plan view of a supporting clip for thev shell.

Fig. 3 isa sectional view showing the shell in operative relation to the drill and adjacent parts of the apparatus.

In the drawings I have shown a base 1, having a bearing 2 for supporting a vertical shaft 3, which carries a bevel gear 4, mesh ing with a bevel gear 5 on a stud shaft 6, located in a bearing 7 in a casing 8, supported from the base 1, and driven from any suitable source of power. A chute 9 passes downwardly in an inclined direction and outwardly through the casing 8 so as to discharge the borings from the drill. The shaft 3 carries a tap arm 10 adjustably mounted on a screw 11, for the purpose of jarring vthe. chute 9 each time the shaft rotates. At its upper end the shaft 3 passes through a sleeve 12 supported in a recess on the top of the casing 8. `A suitable housing 13 rests on top of the sleeve 12. At its upper end the sha-ft 3 is connected to a tool holder 14 by means of a screw 15. Said tool holder 14 on its side has a leather wiper 16 which is attached thereto by one or more screws 17, said wiper being provided to discharge the boi-ings downwardly through the chute 11. 'lhe tool holder 14 carries a tool 8 with horiz(mtally-dirccted blades to produce a countersink in the charge in the shell, and above the tool 18 the tool holder carries a drill 19 which is secured in the holder 14 by a screwtlu'ead 2O on the drill or parts at taehed thereto. The housing 13 has at one side a recess 21 tor receiving a pivote'd adjustable stop 22 located in a bearing 23 screw.tln'eaded` to the housing 13 and having screw-threaded .thereto collars 24 for adjusting ithe vertical position of the stopV 22. `tieiil housing 13, furthermore, has a pair ot diametrically opposed slots 25 designed to'receive the ends oit two bent strips of metal 26 and 27 having their ends connected together by rivets 28 to form arms 29 and 30 and their centra-l portions bent into Acurved positions to form a circle 31 for receiving and supporting an inverted Shell .carrying an explosive charge of any suitable character as for example of t-rinitrotoluene. The arms 29 and 30 slide in the slots 25 and the jhousing` 13 has an enlarged bore 32 at its upper end to accommodate the circular portion 31. `The arms 29 and 30, outside of rthe housing 13, rest upon bars 33 which are attached to a cylinder 34 adapted to move upwardly and downwardly by air pressure and carrying at its upper end a horizontal extension 35 having a 'downwardly extended sar 36 to rest upon the top of the shell, and a laterally-directed handle 37 to permit the bar 36 to be swung away from its position above the housing 13. At its side the cylin- 'der 34 is connected in any suitable manner with a source of air supply, as for example, a pipe 38 which may have. any suitable connection to the cylinder 34. A three-way cock 40, in the pipe 38, permits the alternate supply and exhaust of the air to and from the cylinder 34. On the base 1 there is a stud piston 41 against which the cylinder 34 acts in being raised and lowered. Adoor 42 is provided at the side of the casing 8.

In the operation of my invention, it will be assumed that the cylinder 34 has been moved upwardly by a supply of air from the pipe 38 through the operation of the valve until the bars 36 and 33 have cleared the top of the housing 13 and that the handle 37 has been operated to move the bar 36 to one side. The shell is then inserted in the circle 31 and the arms 29 and 30 attached thereto carrying the shell are placed on the bars 33. The shell thus supported is then swung over the open upper end of the housing 13 until the shell registers therewith and the arms 29 and 30 register with the slots 25. rIhereupon the air is gradually eX- haused from the cylinder 3st by operating the valve 40 and the shell lowered by the aid of its weight and the weight of the bar 36 and attached parts unt-il the end of the shell or parts attached thereto rest against the stop Q2. lVhile the shell is being lowered yin this manner the drill 19 Iand the tool 18 willbc rotated by the gears 4 and 5 so as to produce a deep hole in the center of'thc charge contained in the shell and a counter-sunk hole of larger diameter adjacent thereto and at the mouth of the deep hole. The holes thus provided permit the .insertion of primers of any desired character for exploding the shell at al suitable time, as for example, when the shell strikes the object 'at which it has vbeen iired. l/Vhile the boring is taking placethe wiper 16 con- `tinually removes the borings of the explosive material from contact with the rotating parts and discharges the same downwardly and outwardly by means of t ie chute 11.

While I have described Jmy invention above in detail, I wish it to be understood thatl many changes may be made therein wit-hout departing from the spirit of my in vention as defined in the claims.

I claim:

1. A drilling apparatus for shells having a drill, and means to feed a shell downwardly in an inverted position to the drill, a reciprocable carrier for the shell and means for `imposing iuid `pressure upon said carrier to elevate lthe same.

y2. A drilling apparatusfor shells-having a drill, and means to feed a shell downwardly in an inverted position to the drill, comprising a swinging carrier for the shell.

3. AV drilling apparatus for shells having a .drill, and means to feed a shell down wardly in an inverted position to the drill, comprising a swinging carrier for-the shell. having a supportmg arm and a shell clip engaging therewith.

4. A drilling'apparatus for shells having a drill, va housing for the same, and means to feed a shell downwardly in an inverted position to the drill, comprising a swinging carrier for the shell, having a supporting said shell clip having an arm which extends through a slot in the drill housing.

5. A'drilling apparatus for shells having a drill, a-diseharge chute for borings and a -wiper for feeding t-heborings to the chute.

6. A drilling apparatus for shells having 'a vertical inverted drill, a discharge chute for borings and a wiper for feedingthe borings to the chute.

7. A drilling apparatus for shells having a drill` "a discharge chute 'for borings and a horizontally moving wiper for feeding'tha borings to the chute.

S. A drilling apparatus for shells having af'vertical inverted drill, a discharge chute for borings and a horizontally moving wiper 'for feeding the borings to the chute.

9. A drilling apparatus for shells comprising an 'inverted drillya stationary heus-- ing alined therewith adapted to engage a shell to aline it with the drill, and movable means for supporting a shell within said housing tocontrol the position of the same with reference to the drill.

'In Vtestimony that I claim the foregoing l have hereunto set my hand.

JOHN CHSNEY.

arm and a shell clip engaging therewith, 

